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Question 31382
JEE Physics · Hard

Waves on String: Impedance Matching MCQ

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Impedance MatchingHardQuestion 31382

Question

For maximum power transmission from string 1 to string 2 at a junction:
  1. A
    μ₁ = μ₂ (same density)
  2. B
    v₁ = v₂
  3. C
    Impedances must be equal (μ₁v₁ = μ₂v₂)
    Correct
  4. D
    No condition needed

Correct answer

Impedances must be equal (μ₁v₁ = μ₂v₂)

Explanation

Acoustic impedance = μv. Maximum transmission occurs when Z₁ = Z₂ → no reflection. This is impedance matching.

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